well i'm not very smart at this too but there have been cases of people going from CEX to SEX by just using another update,if this SEX update would be 2.70,there would be a SEX to CEX reverter available on this forum(hence the factory firmware 2.70 i was talking about) but i'm not sure about using any SEX update on OFW 4.25... if i had 2.70 Kiosk firmware files or SEX firmware files as they are called, i could try it out
